Adjustable plow



May 7, 1946.

J. R. MICHAEL ADJUSTABLE PLOW 7 'Filed Jan. 26, 1944 2 Sheets-Sheet 1 mm (IRA/ 07am 2 May 7, 1946.

J. R. MICHAEL ADJUSTABLE PLOW 2 Sheets-Sheet 2 Filed Jan. 26, 1944 -IIII' O Patented May 7, 1946 UNITED STATES PATENT OFFICE John R. Michael, Arab, Ala.

Application January 26, 1944, Serial No. 519,785

1 Claim.

This invention relates to an adjustable low, cultivator, or the like, and is applicable to all types of plows, particularly the walking, riding and tractor types.

It is especially aimed to provide a structure which will permit adjustment after the back band of the harness has been adjusted to the proper angle so that if the plow is not exactly adjusted as it should be for proper draft and smooth running, it can then without stopping the plow, if so desired, be accurately adjusted, especially to save the draft animal much discomfort, injuries and sores.

More specifically, I aim to provide a structure wherein the plow standard is pivotally mounted on the beam and coacts with means connected to the beam and to the standard manually operable to eifect the desired accurate adjustment.

It is further aimed to provide a novel form of clevis for the plow beam, particularly enabling reversal whereby it may be disposed for the more direct and efiicient draft and also be adapted for continuous use in the event one side becomes broken or injured.

The more specific objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawings illustrating an operative embodiment.

In said drawings:

Figure 1 is a view in side elevation of a plow beam, the standard and plow being constructed in accordance with the invention;

Figure 2 is an enlarged view taken approximately longitudinally, vertically and centrally;

Figure 3 is an enlarged sectional view taken on the line 3-3 of Figure 2;

Figure 4 is a horizontal sectional view taken on the line 4-4 of Figure 2;

Figure 5 is a detail side elevation of the clevis and adjacent parts of the plow beam; and

Figure 6 is an enlarged vertical sectional view taken on the line 6-6 of Figure 1.

Referring specifically to the drawings wherein like reference characters designate like or simion which a plow standard I I is pivotally mounted by a removable bolt as at l2. The structure shown is of the walking type, although it may be just as well of the. riding, tractor, or other types.

A clevis is provided at I3 which is preferably made in a single piece and has an attaching plate at It provided with screw-threaded openings at [5 which are engaged by the adjacent threads of a bolt l6, preferably having a manually operlm parts, Ill designates a conventional plow beam able head ll. Extending from the clevis centrally of the plate I4 is an arm l8 which occupies a slot IS in the beam Hi, to generally brace the connection. Particular attention is called to the fact that the clevis has two openings disposed equidistantly on opposite sides of the longitudinal center line of the clevis. As a result of this construction, the clevis may be placed in the most advantageous position relative to the band of the harness and in the event of breakage of the clevis at either opening, the clevis may be reversed while the bolt I6 is removed, and in connection with the manipulation of the bolt I6, this object may be accomplished by hand without the necessity of using tools.

The plow standard H has spaced arms 2| disposed one on each side'of the beam l0, and providing a vertical slot as at 22 which receives a bolt 23, removably clamping a shovel 24 in place, the illustration of which is to be taken as representative since the shovel may be for plowing or cultivating, of diamond-point form, round-point form or otherwise, and whether adapted for truck farming, general farming, or the like.

An inverted U-shaped saddle at 22 has elements 23 screwed into the lower end thereof at 24, and which elements extend into openings 25 of the arms 2| and thus pivotally mount or suspend the standards II.

A wear plate 26 is disposed on the top of the beam l0 and it is secured in place by screws or other fastenings 21 which also pass through an choring plate 28 for a bolt 29. Such plate has a central raised portion 30 beneath which the head I 3| of the bolt is disposed, and through which an opening 32 is provided with the shank of the bolt 29 extending loosely therethrough. The screw threads of the shank of the bolt 29 engage the screw threads at 33 in an opening at the top of the saddle 22, so that turning of the bolt in the opposite directions will raise or lower the saddle 22, pivotally moving the standard 2| on its axis at bolt I2 and regulating the depth of the shovel 24.

Threaded on the bolt 29 is a nut 34 which must be loosened when the bolt is turned and which is adapted for movement against the saddle 22 to prevent accidental turning of the bolt. Nut 34 is preferably provided with wings at 35 whereby it may be manually manipulated. To enable efficient turning of the bolt 29, a hand wheel 36 is preferably secured thereto, detachably and in any suitable manner.

It will be clear that the bolt 29 and associated parts may be of any desired size or strength dependent on the parts employed and the work to be performed.

Various changes may be resorted to provided they fall within the spirit and scope of the inventlon.

I claim as my invention:

In combination with a beam and shovelmounting standard pivoted thereon, a saddle pivoted to the standard, means operable to move the saddle relatively to the beam to adjust the position of the shovel, comprising a bolt threaded to the saddle, means mounting the bolt on the beam for rotation and against sliding movement comprising an anchor plate, an operating element on the bolt to afford leverage to turn the same, and a lock nut threaded to the bolt and engageable against the saddle.

JOHN R. MICHAEL. 

